生物技术通报

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细胞色素P450参与次生代谢物合成响应生物胁迫

王嘉1,2,3(), 高暝1,3, 赵耘霄1,3, 陈益存1,3(), 汪阳东1,3()   

  1. 1.中国林业科学研究院亚热带林业研究所,杭州 311400
    2.南京林业大学,南京 210037
    3.全省林木育种重点实验室,杭州 311400
  • 收稿日期:2025-05-18 出版日期:2025-09-16
  • 通讯作者: 汪阳东,男,研究员,研究方向 :化工原料树种遗传育种;E-mail: wangyangdong@caf.ac.cn
    陈益存,女,研究员,研究方向 :化工原料树种遗传育种;E-mail: chenyc@caf.ac.cn
  • 作者简介:王嘉,女,博士研究生,研究方向 :化工油料树种抗性性状解析;E-mail: wangjiashixiaohai@163.com
  • 基金资助:
    国家重点研发计划(2022YFD2200603);浙江省科技创新领军人才项目(2022R52028)

Cytochrome P450 Involved in Secondary Metabolites Biosynthesis in Response to Biotic Stresses

WANG Jia1,2,3(), GAO Ming1,3, ZHAO Yun-xiao1,3, CHEN Yi-cun1,3(), WANG Yang-dong1,3()   

  1. 1.Research Institute of Sub tropical Forestry, Chinese Academy of Forestry, Hangzhou 311400
    2.Nanjing Forestry University, Nanjing 210037
    3.Zhejiang Key Laboratory of Forest Genetics and Breeding, Hangzhou 311400
  • Received:2025-05-18 Published:2025-09-16

摘要:

植物细胞色素P450(cytochrome P450, CYP450)酶是一类重要的血红素结合蛋白,该酶由于其还原态与一氧化碳结合后在450 nm有一处特征性的吸收峰而得名。作为植物中最大的单加氧酶超家族之一,CYP450酶通过催化羟基化、环氧化、脱烷基化等多种氧化反应,广泛参与生长发育、次生代谢合成及逆境防御等生物学过程,被誉为“万能的生物催化剂”。在生物胁迫(如病原菌侵害、虫害取食)条件下,植物通过激活CYP450介导的苯丙烷类、萜类、脂肪酸类、硫代葡萄糖苷类等多种次生代谢途径,合成具有抗虫或抗菌活性的化合物,从而增强植物抵御病虫害的能力。近年来,随着高通量测序技术和分子生物学的发展,已在多种植物中对参与相关生物过程的CYP450酶进行了分离、筛选及功能鉴定。鉴于此,本文结合CYP450酶的命名、结构特点以及在植物中的分类和分布,重点介绍CYP450家族基因在植物次生代谢物合成以及生物胁迫响应方面的研究进展,为植物CYP450家族基因的挖掘及功能研究提供参考,同时为基于此的次生代谢物合成及生物胁迫响应中的作用提供依据。

关键词: 细胞色素P450, 命名, 结构特点, 次生代谢物合成, 生物胁迫

Abstract:

Plant cytochrome P450 (CYP450) enzymes constitute a critical class of heme-binding proteins, distinguished by the characteristic 450 nm absorption peak in their reduced carbon monoxide-bound form. As one of the largest single oxygenase superfamilies in plants, CYP450 enzymes are widely involved in various biological processes such as growth and development, secondary metabolism synthesis, and stress defense by catalyzing multiple oxidation reactions including hydroxylation, epoxidation, and dealkylation. They are thus hailed as "universal biological catalysts". Under biotic stress conditions (such as pathogen invasion and pest feeding), plantactivate CYP450-mediated secondary metabolic pathways such as phenylpropanoids, terpenoids, fatty acids, and glucosinolates to synthesize compounds with pesticidal or antimicrobial properties, thereby enhancing the plant's ability to resist pests and diseases. In recent years, with the development of high-throughput sequencing technology and molecular biology, multiple CYP450 enzymes associated with these biological processes have been isolated, screened, and functionally characterized in diverse plant species. In view of this, this review provides a comprehensive overview of the nomenclature, structural characteristics, classification and distribution of CYP450 enzymes in plants. Concurrently, it focuses on introducing the research progress of CYP450 family genes in secondary metabolite biosynthesis and biotic stress responses. It provides a reference for the mining and functional study of CYP450 family genes in plants, as well as provides a basis for the role of secondary metabolite biosynthesis and biotic stress response based on this.

Key words: cytochrome P450, nomenclature, structural characteristics, secondary metabolites biosynthesis, biotic stresses